42210530 has 16 divisors (see below), whose sum is σ = 78430464. Its totient is φ = 16339440.

The previous prime is 42210529. The next prime is 42210551. The reversal of 42210530 is 3501224.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42210499 and 42210508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67772 + ... + 68391.

It is an arithmetic number, because the mean of its divisors is an integer number (4901904).

Almost surely, 2^42210530 is an apocalyptic number.

42210530 is a deficient number, since it is larger than the sum of its proper divisors (36219934).

42210530 is a wasteful number, since it uses less digits than its factorization.

42210530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136201.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42210530 is about 6496.9631367278. The cubic root of 42210530 is about 348.1824966516.

Adding to 42210530 its reverse (3501224), we get a palindrome (45711754).

The spelling of 42210530 in words is "forty-two million, two hundred ten thousand, five hundred thirty".